package com.heima.kafka.controller;

import com.alibaba.fastjson.JSON;
import com.heima.kafka.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class HelloController {

    @Autowired
    private KafkaTemplate<String,String> kafkaTemplate;

    @GetMapping("/hello")
    public String Hello(){
        kafkaTemplate.send("itcast-topic","黑马程序员");
        return "ok";
    }

    //传对象，先封装为json，再解
    @GetMapping("/helloworld")
    public String helloworld(){
        User user=new User();
        user.setUsername("小黑子");
        user.setAge(2);
        kafkaTemplate.send("user-topic", JSON.toJSONString(user));
        return "ok";
    }
}
